Flank Wear Estimation Under Varying Cutting Conditions

[+] Author and Article Information
Yoram Koren, Tsu-Ren Ko, A. Galip Ulsoy

Department of Mechanical Engineering and Applied Mechanics, The University of Michigan, Ann Arbor, MI 48109-2125

Kourosh Danai

Department of Mechanical Engineering, The University of Massachusetts, Amherst, MA

J. Dyn. Sys., Meas., Control 113(2), 300-307 (Jun 01, 1991) (8 pages) doi:10.1115/1.2896379 History: Received November 01, 1989; Revised September 01, 1990; Online March 17, 2008


A model-based methodology, designed to operate under varying cutting conditions, for on-line estimation of flank-wear rate based on cutting force measurements is introduced. The key idea is to employ a model of the relationship between force and flank wear, together with on-line parameter estimation methods. This permits separation of the direct effect of changing cutting conditions on force from the indirect effect where changing cutting conditions affect the wear which, in turn, affects the force. Simulation results confirm the effectiveness of this strategy for turning with varying speed, feed, or depth of cut. Experiments, conducted for turning operations with a varying depth of cut, show good agreement between estimated wear values and the actual values of tool wear measured intermittently during the cut.

Copyright © 1991 by The American Society of Mechanical Engineers
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